Doorlock



April 9, 1935. A, L.. sPREcKER 1,997,155

DOORLOCK Filed Sept. 23, 1953 2 Sheets-Sheet l April 9, 1935v A. L.sPREcKER 1,997,155

DOORLOCK Filed Sept. 23, 1935 2 Sheets-Sheet 2 HSA. i Q ,Ha

Y ATTORNEY Patented Apes, 1935 A. l 1,997,155 i Internationalv BusinessMachines Corporation. New York; N. Y., a Lcorporaticn of New YorklApplication SeptemberZS, 1933, Serial No..690,643

` 3 Claims." (Cl. Y0-79) This invention relatesto improvementsin locks1- Fig. 6 shows Aa detail of the interlocking mechaand more particularlyto improved interlocking nism of the dead-lock. features between lockssuch as shown in the pat- Fig. 'lisa diagram showing the wiring betweenent to Bush 1,611,579. y 'Y Y r the interlocking mechanisms.' of thelocks. -5 The interlocking arrangement disclosedfin the In .view of thecomplete disclosure of the record- 5 patent` to Bush shows the-featureof interlocking ing andtiming'mechanism shown in the patent the masterlock to prevent the bolt from being` to Bush, No. 16l1,579,datedfDecember 21, 1926, thrown to a locked position unless allsubsidiary it is believed unnecessary for the sake of simlocks and.bolts which are on other doorsand plicity to show or describe furtherthis partof the windows have previously been thrown-to theirmaster-lockxas it.plays no'part in thev present 10 locked position. Amore extensive protection of invention'.v The lower or vbolt'section-and interthe property is often desired and vparticularly lockingsection of the master-lock shown in Fig.v 1 under conditions where astorage room or wareis substantiallythe-saineV as that shown in thehouse is located within the property.v For eX- prior patent to Bush withslight changes in some ample,many clothing manufacturersleavestorofthenpartsfand with .additional improvements age rooms within whichthey keep the nished which constitute thepresent invention.

product locked and it is kdesirable to-be assured VAny conventionalVform of tumbler lock, not that this room is locked before the premisesare shown, may bef attached to the barrel I0 0f the vacated at closingtime, and the door locked. master.10ck,' Fig. 2; and the barrel Ina ofthe Many times a watchman in collusion with :others lock shown inr Fig.V5 whichwill hereinafter be 20' on the outside has opened these roomsand has designated the dead lock. The cylinders mand passed the contentsof theroom'thro'ugh the win-V Ina thereforeA may be turned bysuitablekeys indows to his confederates on the outside.` It' issertedinto'the key barrel andturned inthe usual important therefore toarrange the interlock so manner.

that the storage room door cannot be unlocked The bolt-andrthemechanismfor actuating it 25 while the main door containing the master lock arerthesame general construction as that shown is locked'and also that thelock to said storage inthe patent to-Bush previously rlerlt'Oned,v inroom be locked before the one responsible for whichV members: IIandifIIaV are keyed tof the locking up the premises can finally'lock themascylinders I0v and larespectively; Integral with ter lock on thedoor'of the main'entrance to th the membersII and -I Ia arelugs I2 andi2a re- 30V establishment. f spectively which project intorannaperture'ofthe An object of the invention is to Vprovide a bolts lI3and I3a so thatwhen said members are master lock and subsidiary lockswhereby `.the .turned the lugs actuatethe bolt and cause the locking ofthe master-lock is'prevented unless all samel to be. thrown *orAretracted 'according to the subsidiary locks are locked. Y

A further object of the nventionis to provide the member is turned, allof which is Vdescribe a master-lock and subsidiary lock `wherebyfthe indetail in Patent Number.1,611,579. subsidiary locks, having beenlocked,xmay.not .be .Interlocking mechanism similar to .that deeposition ofthe bolts and the direction in which 35 unlocked until themaster-lock is unlocked. scribed in thev previously mentioned patent Vis40 Further objects and advantages will;be,herein, shown inl Figs. 3.and6 in whichy the energization 40` after pointed out in detail in theaccompanying of magnets I4 andv I4a causes their' respectivespecications and claims .and shown in thedrawarmatures I5 and-I5a to beattracted, 'throwing ings, which by way'pof'exempliiication showV alocking 'pawls I6 vand IIiaagainst cams '.I'I and preferred embodimentof the invention. y I-TIa, respectively;- which are fixed Ato thecylinders Inthe drawingsz- Y g; g Ill-and Illa'thuspreventing thecomplete turning 45 Fig. 1 shows a front elevation of the lower partofthe members' I I and I Ia .when the lugs `I8 or or bolt section of themaster-lock. Y IBa abut either ofthe lockingpawlsl or 'Ilia'.A re- Fig.2 shows a section taken substantially spectively, which may Vbe .throwninto their path. along line 2--2 of Fig. l. A 1 Y Spring blade contactsI9 and ISa shown closed in Fig. 3 shows a detailed view of theinterlock- Figs.3 and 6 are normally biased to open position y50 y ingmechanism of the'master-lock. by the faction of their springblades andpress:` y

Fig. 4 shows a front elevation of a subsidiary against insulatingmembers xed to one arm of dead-lock. l f members 20 and 20a pivotallymountedat 2| and Fig. 5 showsasectlon taken substantially along 2Iarespectively. The member 20 is biased in the line 5-5 of Fig. 4.counterclockwise direction and the member 20a V55 .2' l 1,997,155 ilmembers II and IIa respectively so that the con.

tacts I9 and I9a are normally open'. When the key cylinder is rotated,therefore, the members I I and I Ia rotate with it and cam theircoordinating cam wipers 2U and 20a to turn in such a manner as to causethe contacts I9 and ISa to close mo-l mentarily.

If upon closure of thesecontactsa circuitis-v established theirrespective magnets VI4 andi' f4a will become energized to preventfurther turning" of the cylinder barrel as previously described 'andthus prevent the bolt from being thrown.y

Spring blade contact 22 shown in Fig. 2 is normally closed when the boltis` thrown to-lock'ed position. A camming member 23 made of suitableinsulated material is xed to one end of itheouter spring blade25 and isbiased'against' the.l side of the` bolt., `Itwill be seen from ,the boltsection .in Fig. 2 that the extreme end ofthe-bolt I3,is `of a thickercrosssection than the' shankof l.said bolt against which the member Y23isV shown vresting in Fig. 2. When this bolt isA withdrawn to unlockedposition the thickerendof the boltcomesin contact with the insulatingmember 231and camsfit outwardly to open contactv 22;,,A;similar contact24 is provided, in the dead-.locksshownfinFlg.` 5, but in `this instance:the contact 24 is normally in open position when the Ybolt I3a isthrown..y 'Ihe inner springblade` 2,6 `alsochasxed to its end .aninsulating member 21 similarto-that'previously described. andbiasedagainst the shank of .the-bolt. i3d, and in this instancethecammingbutWard v of themember' 21 by thewithdraWal of the bolt causescontact 24to close, vwhich, is the reverse.V

operationof the corresponding contactlin the master-lock. .Fig.,.7 showsa wiringdiagram of;r the connections between the master-lock general-Vside ofthe battery 30 through wires. 3| and.

32, magnet I4a, contact I9a,.nowvclosed`wires 33 and 34 contact22now`closed, wire35,xan`d back.:

to the negative side of the .battery,'thus energizing the magnet Ida:and causing the interlocking. mechanism to preventthedead-locklbolti I3a,-r

from being withdrawnas previously described.

When the Vpremises are openl for-business the master-lockbolt I3 .iswithdrawn by,l .the proper key inthe usual manner,thereby'causingcontacts.

22 to open. Thereafter, the. dead-lock bolt I3a maybe withdrawnas theclosure of1contactl9a'- during this operationfwillnotset upia'circuitto' energize magnet I4a.due to the contacts 22f'now being open. `Withthe dead-.lock now inl an unlocked position-i. 'e. with itsboltwithdrawn con.-

tacts24are closed., VIfnowgatthe closeyof busiy their locked positions.

ness an attempt is made to lock up the premises by locking themaster-lock by throwing the bolt I3 of the master-lock to a lockedposition before the bolts in the dead-locks have been thrown, a circuitis established by virtue of the contacts I9 being momentarily closedupon the turning of the key in the master-lock as previously described.

vThis circuit is asfollowspFromthe positive side of therbattery 3l!Vthroughwire'il, magnet I4, contacts I9 nowclosed, wire 31, contacts 24now closed, wire 38, and Vback to the negative side of vthe battery. Themagnet I 4 is thus energized,

causing the interlock mechanism in the masterlock to lock the barrel I0against making a complete turn andthuspreventing the bolt I3 in theYmaster-lock from being thrown to a locked posi` tion. This callsattention to the fact that the subsidiary dead-locks have not all beenthrown into If now the dead-locks are properly locked contacts 24 willbe open, thus breakingthe circuit through contacts I9 and magnets,` I4permitting.the-master-lock to beoperated into Aits locked positionei Asall the contacts in the subsidiary dead-locks are wired in parallelconnection` with Ythe contacts 'in the '.master-lockthe failure to lockany one 'ofthe'dead-locks will cause the master lock to be lockedagainst operation.

While .the fundamental: novelrfeatures Iof the invention asapplied to asingle modification have been shownand described it will be vunderstoodthat'v `various omissions VvandV substitutes 'and changes-in theformanddetails of the device illustrated and in its operation. may bemade'by those skilled inthe art withoutldeparting from the spiritofthe'. invention. Lintendl to be limited therefore onlyas'indicatedby the.scope of the following, claims.

What I claim is asfollows:`

1.In aninterlockingrdoor system in combinationfwith a main doorllockand'supplementary door Vlocki-ngmeans..E interlocking means in saidsupplementary door locking means to prevent unlocking operationsthereof, circuits connecting said interlocking means with said main doorlock and'means in saidmain .door lock for controlling the interlockingmeans in said supplementary door locks.-` f

2. In an interlocking .door system; a main and a pluralityofsupplementary-locks, means for lockingsaidmain door-lock, lockingmeans for-said supplementary locks, interlocking means between eachV ofsaid supplementary locks and said main lock forpreventing the operationof the lockingmeans for the main lock, andfurther interlocking meansbetweenl the main lock'and the supplementary ylocks forv preventingoperation of the supplementary locking. means unless the locking meansforisaid main lock isoperated. v'

3. In aninterlo'ckingdoor system in combinationwitha main door.lock'fand supplementary doorlocking means, electromagnetically operatedinterlockingmeans in said :supplementary door locking'A means toAprevent unlocking operationsl thereof, circuits connecting said'electromagneti-` cally operated locking means withthe main door locksyand contacts in said'rna'in door lock'fconnecting with saidcircuits'for-controllingtheV electro'- magnetically'- operated means inAsaid supplementary locking means. i

. ALFRED, L; sP'Rile'lkrzi-t.

